Sit, Regina WS
Chung, Vincent CH
Reeves, Kenneth D.
Rabago, David
Chan, Keith KW
Chan, Dicken CC
Wu, Xinyin
Ho, Robin ST
Wong, Samuel YS
Article History
Received: 17 August 2015
Accepted: 13 April 2016
First Online: 5 May 2016
Change Date: 7 April 2017
Change Type: Update
Change Details: A correction has been published and is appended to both the HTML and PDF versions of this paper. The error has not been fixed in the paper.
Competing interests
: The authors declare no competing financial interests.